I'm not sure about Leatha's restaurant (Leatha's Bar-B-Que Inn in Hattiesburg, Mississippi), but Leatha's sauce is down home. This stuff is sold in Ball Jars with a black and white sticker slapped on, ya'll. There are no ingredients. There is no nutritional info. There is no barcode. Just Ms. Leatha's pretty face and...a web address?!! Don't worry, the website seems to have diappeared into the ether. Websites aside, this jar would be right at home within the pages of Wilber W. Caldwell's Searching for the Dixie Barbecue.
Okay, but how does it taste? Delicious. This is definitely a sweet one. It's got a lot of tomato flavor, and it's got sugar for sure, but...maybe something more? I heard a rumor that grape jelly is one of the ingredients. I can't confirm or deny that, but let's just say there is a certain candy quality to Ms. Leatha's magic. It's got a little bit of pepper and heat, but nothing strong enough to make you forget that sweetness. I bet it would make some ribs taste mighty fine.